not sure if this is associated or not, but...
Belu-Riombara-Mio Dupaki AND the city of Grehk have the message coming up of: "There are no weapon smiths in this region."
However, there are smiths, and production isn't low enough (or even close to risking being low) to deny it working... not sure how widespread it is, but this means at least 1 city and 1 townsland just started having this problem..